The Public Provident Fund (PPF) is a savings option for investors seeking government-backed, tax-efficient returns. The most important question remains: How much can regular monthly contributions in PPF grow over 15 years? Can even modest monthly investments at the current PPF interest rate of 7.1% build a meaningful corpus over time?
For example, investing ₹1,000 a month over a 15-year horizon can grow to about ₹3.25 lakh, whereas a ₹5,000 monthly contribution can grow to about ₹16.27 lakh. This is based on the assumption that the interest rates remain unchanged throughout the investment period.
PPF rate currently at 7.1%
The government has retained 7.1% interest rate for PPF investments for the July-September 2026 quarter. PPF rates, along with those of other small savings schemes, are reviewed periodically; therefore, investors should not assume the same rate will apply to new PPF investments over the 15 years.
Growth of monthly PPF contributions
For investments of ₹1,000, ₹5,000 and ₹10,000, assuming a constant rate of 7.1% and monthly deposits, the estimated figures are shown below.
| ₹1,000 | ₹1.80 lakh | ₹1.45 lakh | ₹3.25 lakh |
| ₹5,000 | ₹9.00 lakh | ₹7.27 lakh | ₹16.27 lakh |
| ₹1,0000 | ₹18.00 lakh | ₹14.55 lakh | ₹32.55 lakh |
Key features of PPF investments
The salient features of PPF investments and their associated factors are as follows:
- PPF has an initial tenure of 15 years.
- This can be subsequently extended in 5-year blocks.
- Deposits between ₹500 and ₹1.5 lakh can be made in a financial year.
- Annually, 12 deposits are permitted.
- The promised interest rates can be amended in future.
Another key aspect of Public Provident Fund (PPF) investments is their tax treatment. Eligible contributions qualify for deductions under Section 80C, subject to applicable tax laws and regulations. Interest earned on PPF accounts is tax‑free under prevailing provisions. In addition, loans and partial withdrawals are permitted, subject to scheme conditions.
Therefore, at 7.1%, a ₹1,000 monthly investment can grow to roughly ₹3.25 lakh, whereas a ₹10,000 monthly investment can grow to ₹32.55 lakh over 15 years.
To ensure long-term economic growth, investors should understand the basic features of such small savings schemes and consult certified financial advisors before investing.
Radhika Goyal is Author of Taxconcept Gurugram head office, for deeply reported tax, gst and income tax articles on issues that matter. He splits her time between New Delhi and Bengaluru, and has worked as a reporter, a podcaster and an editor for publications across India.